diff --git a/[refs] b/[refs]
index 11e87c9a441d..aba9cd574f0e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6c085a728cf000ac1865d66f8c9b52935558b328
+refs/heads/master: c4670ad080a1fe60d49f850e11f64a41db525496
diff --git a/trunk/drivers/gpu/drm/i915/i915_gem.c b/trunk/drivers/gpu/drm/i915/i915_gem.c
index 462a8f2ad3a2..a549be5f535b 100644
--- a/trunk/drivers/gpu/drm/i915/i915_gem.c
+++ b/trunk/drivers/gpu/drm/i915/i915_gem.c
@@ -1378,6 +1378,8 @@ i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj)
 	int page_count = obj->base.size / PAGE_SIZE;
 	int ret, i;
 
+	BUG_ON(obj->gtt_space);
+
 	if (obj->pages == NULL)
 		return 0;
 
@@ -2293,6 +2295,8 @@ i915_gem_object_unbind(struct drm_i915_gem_object *obj)
 	if (obj->pin_count)
 		return -EBUSY;
 
+	BUG_ON(obj->pages == NULL);
+
 	ret = i915_gem_object_finish_gpu(obj);
 	if (ret)
 		return ret;